driving directions retrieved from multiple contact map have erroneous destination

I created a profile with mapping enabled, made a search, and clicked "Map these contacts"

When I click on one of the contacts I get a box where I can enter a FROM address for driving directions. I enter an address and click Go.

This works when I'm only viewing a single contact on the map, but if more than one contact was returned, the driving directions are always given to the same contact, no matter which contact I've clicked on the map.